Messenger RNA for the coat protein of southern bean mosaic virus.

When RNA from southern bean mosaic virus is fractionated on a sucrose gradient, the resulting absorbance profile shows a major peak corresponding to 1.4 x 10(6) MW together with a considerable amount of slower sedimenting material. The RNA from these gradient fractions was translated in wheat embryo extracts and reticulocyte lysates. Only RNA in the molecular weight range 0.3 - 0.4 x 10(6) was found to induce synthesis of coat protein (designated P3). RNA of molecular weight 1.4 x 10(6) induced synthesis of three proteins, P1, P2, and P4.